Does NY have an estate tax exemption for Spouses?
The federal government and New York State do not charge taxes on any property that the deceased leaves to their spouse. This is called the "marital deduction." However, there is a big difference between how federal and New York State handle this. The federal government lets you transfer any unused estate tax exclusion amount to your spouse when they die - New York State does not let you do this. Any unused amount of the New York estate exclusion may not be transferred and used by the surviving spouse.
Meaning - If you do not use the deceased spouse's exclusion by giving gifts to non-spouse beneficiaries or a trust, then you cannot use it in the future. This may happen if a spouse directs that their entire estate pass outright to the surviving spouse. When the surviving spouse passes away, he or she will only have his or her estate tax exclusion amount available, but none from the predeceased spouse.